<template>
	<div>
		<div class="search">
			<input v-model="keyword" class="search-input" type="text" placeholder="输入城市名或拼音">
		</div>
		<div 
		class="search-content" 
		ref="search"
		v-show="keyword"
		>
			<ul>
				<li 
				v-for="item of list"
				class="search-item"
				:key="item.id"
				@click="handleCityClick(item.name)"
				>{{item.name}}</li>
				<li class="search-item" v-show="hasNoData">没有找到匹配项目</li>
			</ul>
		</div>
	</div>
</template>

<script>
import BScroll from 'better-scroll'
export default {
	name:'CitySearch',
	props: {
		cities:Object
	},
	data () {
		return {
			list:[],
			keyword:'',
			timer:null
		}
	},
	mounted () {
		this.scroll = new BScroll(this.$refs.search,{
			click: true
		})
	},
	methods: {
		handleCityClick (city) {
			this.$store.dispatch('changeCity',city)
			this.$router.push('/')
			this.keyword = ''
		}
	},
	computed: {
		hasNoData () {
			return !this.list.length
		}
	},
	watch: {
		keyword () {
			if(this.timer){
				clearTimeout(this.timer)
			}
			if (!this.keyword) {
				this.list = []
				return
			}
			this.timer=setTimeout(() => {
				const result = []
				for (let i in this.cities) {
					this.cities[i].forEach((value) => {
						if (value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1) {
							result.push(value)
						}
					})
				}
				this.list = result
			},100)
		}
	}
}
</script>

<style lang="stylus" scoped>
@import '~styles/varibles.styl'
		.search
			height .72rem
			background $bgColor
			padding 0 .1rem
			.search-input
				box-sizing border-box
				width 100%
				padding 0 .1rem
				height .62rem
				line-height .62rem
				border-radius .06rem
				text-align center
				color #666
		.search-content
			z-index 1
			position absolute
			top 1.58rem
			left 0
			right 0
			bottom 0
			overflow hidden
			background #eee
			.search-item
				line-height .62rem
				border-bottom .02rem solid #ccc
				padding-left .2rem
				color #666
				background #fff
</style>